by zhlmmc
Log4j瀹炲湪鏄緢鐔熸倝錛屽嚑涔庢墍鏈夌殑Java欏圭洰閮界敤瀹冨晩銆備絾鏄垜紜竴鐩存病鏈夋悶鏄庣櫧銆傜粓浜庢湁涓澶╂垜鍙椾笉浜嗕簡錛屽畾涓嬪績鍘葷湅浜嗕竴鎶婃枃妗ｏ紝鎵嶄袱涓皬鏃訛紝鎴戠粓浜庢悶鏄庣櫧浜嗐備竴鑸儏鍐典笅Log4j鎬繪槸鍜?/span>Apache Commons-logging涓璧風敤鐨勶紝鎴戜篃灝變竴璧蜂粙緇嶅惂銆傚浜嗕釜涓滆タ涓嶆槸鏇撮夯鐑︼紝鑰屾槸鏇寸畝鍗曪紒
<!--[if !supportLists]-->涓銆?/span><!--[endif]-->Log4j鐨勭畝鍗曟濇兂
Log4j鐪熺殑寰堢畝鍗曪紝綆鍗曞埌浠や漢鍙戞寚鐨勫湴姝ャ備笉鏄璁板綍鏃ュ織鍚楋紵閭ｅ氨緇欎綘涓涓?/span>Log錛岀劧鍚庝綘鐢?/span>Log鏉ュ啓涓滆タ灝辮浜嗭紝鍏堟潵涓涓畬鏁寸被紺轟緥錛?/span>
package test;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
public class Test {
static Log log = LogFactory.getLog(Test.class);
public void log(){
log.debug("Debug info.");
log.info("Info info");
log.warn("Warn info");
log.error("Error info");
log.fatal("Fatal info");
}
/**
* @param args
*/
public static void main(String[] args) {
Test test = new Test();
test.log();
}
}
鍒曪紝鐪嬪畬榪欑瘒鏂囩珷浣犲氨浼氳寰楀緢綆鍗曚簡銆?/span>
Log4j榛樿鎶婃棩蹇椾俊鎭垎涓轟簲涓瓑綰?/span>
debug < info < warn < error < fatal
铏界劧鍙互鑷繁娣誨姞絳夌駭錛屼絾鏄垜瑙夊緱娌℃湁蹇呰錛屼簲涓鐢ㄤ簡鍚э紒浣犺鍐欏叆淇℃伅鐨勬椂鍊欏氨鎶婁俊鎭綊涓轟簲涓瓑綰т腑鐨勪竴涓紝鐒跺悗璋冪敤鐩稿簲鐨勫嚱鏁板嵆鍙?/span>
鍒嗕簲涓瓑綰у埌搴曟湁浠涔堢敤鍛紵鏃ュ織淇℃伅鍒板簳鍐欏埌鍝噷鍘諱簡錛?/span>
“LogFactory.getLog(Test.class)”鍙堟槸浠涔堟剰鎬濇崗錛熸帴鐫寰涓嬬湅鍚э紒
Log4j鐨勫叧閿箣澶勫湪浜庡畠鐨勭戶鎵挎濇兂銆備篃灝辨槸涓涓?/span>Log鍙互緇ф壙鍙﹀涓涓?/span>Log鐨勫睘鎬э紙杈撳嚭鍒板摢閲岋紝鏃ュ織絳夌駭錛屾棩蹇楁牸寮忕瓑絳夛級銆傛庝箞緇ф壙錛?/span>
Log4j鏄牴鎹?/span>Log鐨勫悕瀛楁潵鍒ゆ柇緇ф壙鍏崇郴鐨勶紝姣斿錛?/span>
鍚嶅瓧涓?#8220;com.zhlmmc.lib”鐨?/span>Log灝辨槸“com.zhlmmc.lib.log”鐨?/span>parent錛屾槑鐧戒簡鍚э紒Log4j榪樻湁涓涓?/span>rootLogger錛岀浉褰撲簬Java鐨?/span>Object銆?/span>
鍥炶繃澶存潵鐪?#8220;LogFactory.getLog(Test.class)”榪欓噷鐨?#8220;Test.class”浜嬪疄涓婁紶榪涘幓鐨勬槸Test榪欎釜綾葷殑瀹屾暣璺緞錛堝寘鍚?/span>+綾誨悕錛夛紝“test.Test”銆傝繖鏍峰鏋滃瓨鍦?#8220;test”榪欎釜Log閭ｄ箞Test榪欎釜Log灝辯戶鎵垮畠錛屽惁鍒欏氨緇ф壙rootLogger銆?/span>
閭ｅ叿浣撶殑Log灞炴ф槸鍦ㄥ摢閲屽畾涔夌殑鍛紵
<!--[if !supportLists]-->浜屻?/span><!--[endif]-->甯歌鐨勯厤緗枃浠?/span>
铏界劧鍙互鐢?/span>xml鎴栬呭湪榪愯鏃剁敤Java鏉ラ厤緗?/span>Log4j錛屼絾榪樻槸properties鏂囦歡濂界敤鍟婏紒
log4j.rootLogger=info, stdout
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
# Pattern to output the caller's file name and line number.
log4j.appender.stdout.layout.ConversionPattern=%5p [%t] (%F:%L) - %m%n
鍒嗘瀽涓涓嬶細
絎竴琛岋紝閰嶇疆log4j.rootLogger浣犳槑鐧藉惂銆傚簲涓哄畠鏄牴錛屾誨緱閰嶇疆涓涓嬶紝鍚﹀垯鍒殑Log緇ф壙浠涔堝晩銆傚叾浠栫殑Log鍙互閰嶇疆涔熷彲浠ヤ笉閰嶇疆銆傜瓑鍙峰悗闈㈢殑絎竴涓弬鏁拌〃紺烘棩蹇楃駭鍒紝鍙互濉簲涓駭鍒腑鐨勪竴縐嶏紝鍚庨潰鐨勫弬鏁伴兘鏄Log鐭ラ亾杈撳嚭鍒板摢閲岋紝濡傛灉浣犳兂璁╂棩蹇楄緭鍑哄埌涓や釜鍦版柟灝卞姞涓や釜杈撳嚭鍙傛暟錛屾瘮濡傦細
log4j.rootLogger=info, stdout, file
榪欓噷鐨?/span>info琛ㄧず錛岃Log鐨勬棩蹇楃駭鍒負info錛屾墍鏈夌駭鍒皬浜?/span>info鐨勬棩蹇楅兘涓嶄細琚褰曘傛瘮濡備嬌鐢ㄨ繖涓厤緗枃浠剁殑璇濓紝鎴戝垰寮濮嬩婦鐨勯偅涓被涓?/span>
log.debug("Debug info.");
榪欏彞璇濇槸涓嶈搗浣滅敤鐨勶紝鍥犱負debug鐨勭駭鍒皬浜?/span>info銆傝繖鏍峰氨寰堝鏄撴帶鍒朵粈涔堜俊鎭湪璋冭瘯鐨勬椂鍊欒鏄劇ず錛屼粈涔堜俊鎭湪鍙戝竷鐨勬椂鍊欒鍘繪帀銆傝繖浜涢兘涓嶇敤鏀逛唬鐮侊紝寰堟柟渚垮惂銆?/span>
浣嗭紝stdout鍜?/span>file鍙堟槸浠涔堝憿錛?/span>
鎺ョ潃寰涓嬬湅錛屽氨鏄厤緗?/span>stdout浜嗭紝榪欎釜鍚嶅瓧鏄殢渚垮彇鐨勶紝浣犲彲浠ュ彨瀹?/span>A錛?/span>
log4j.appender.A=org.apache.log4j.ConsoleAppender
閭ｄ箞涓婇潰鐨?/span>rootLogger鐨勫弬鏁?/span>stdout涔熻鏀規垚A錛屽叾浠栫敤鍒扮殑鍦版柟褰撶劧涔熻鏀廣傝繖閲岀殑鍏抽敭涓嶆槸鍚嶅瓧錛岃屾槸appender綾誨瀷錛屾瘮濡傝繖閲岀殑“ConsoleAppender”錛岀湅鏄庣櫧浜嗗惂錛岃緭鍑哄埌Console銆傚悗闈袱琛岄兘鏄緗棩蹇楁牸寮忕殑錛屼竴鑸儏鍐典笅浣犲氨鐓ф妱鍚с傛棦鐒舵槸鏈綆鍏ラ棬鍏蟲敞浜庣悊瑙?/span>Log4j鐨勫伐浣滃師鐞嗭紝鎴戝氨涓嶄粙緇?/span>file綾誨瀷鐨?/span>appender浜嗭紝涓鎼滀竴澶ф妸銆?/span>
鍦ㄥ疄闄呯殑欏圭洰寮鍙戜腑錛屽緢鍙兘閬囧埌鎵寮曠敤鐨勫寘鐢?/span>Log4j鏉ヨ褰曟棩蹇楋紝姣斿Hibernate銆傞偅涔堝湪榪欓噷浣犲彲浠ュ緢瀹規槗鐨勬帶鍒惰繖涓寘濡備綍璁板綍鏃ュ織銆傛瘮濡傚湪涓婇潰鐨勯厤緗枃浠朵腑鍔犱竴琛岋細
log4j.logger.org.hibernate=fatal
閭ｄ箞鎵鏈?/span>org.hibernate鍖呬笅闈㈢殑綾誨氨鍙細鏄劇ず寰堝皯鐨勪俊鎭紝鍥犱負fatal鐨勭駭鍒渶楂樺晩銆?/span>
<!--[if !supportLists]-->涓夈?/span><!--[endif]-->閮ㄧ講
鍒曪紝榪欏彲涓嶆槸閮ㄧ講Tomcat銆傛妸log4j鐨勫寘鍜?/span>commons-logging鐨勫寘錛堝姞鍦ㄤ竴璧鋒墠涓や釜錛夋斁鍒?/span>classpath涓嬮潰銆傜劧鍚庢妸閰嶇疆鏂囦歡淇濆瓨涓?/span>log4j.properties錛屼篃鏀懼湪classpath涓嬮潰錛堝鏋滅敤Eclipse鐨勮瘽錛屾斁鍦?/span>src鐩綍涓嬪嵆鍙級銆傜劧鍚庝綘灝卞彲浠ヨ窇浜嗐?/span>